Grain processing assembly for a combine

ABSTRACT

A grain processing assembly having a feeder assembly with a discharge end that is adjacent and above an opening in a thresher assembly.

BACKGROUND OF THE INVENTION

This invention is directed to a grain processing assembly for a combineand more particularly to a top feed grain processing assembly.

Grain processing assemblies for combines are well known in the art.Present assemblies include, in part, a feeder assembly that deliverscrop material to the bottom of a threshing assembly. In thisarrangement, crop material can become plugged, clogged, or stuck on thefeeder assembly. In addition, residual grain can become trapped in thethreshing assembly and feeder assembly. This is particularly a problemwith seed research plot combines where contamination between differentseeds must be avoided. As such, a need exists in the art for an assemblythat addresses these needs.

Therefore, an objective of the present invention is to provide a grainprocessing assembly where crop material is fed to the top of a threshingassembly.

A further objective of the present invention is to provide a grainprocessing assembly that reduces or eliminates cross contamination.

These and other objectives will be apparent to one of ordinary skill inthe art based upon the following written description, drawings andclaims.

SUMMARY OF THE INVENTION

A grain processing assembly for a combine having a feeder assembly and athresher assembly. The feeder assembly has a first conveyor having aninput end and a discharge end and a second conveyor positioned above thefirst conveyor.

The thresher assembly has a rotatable rotor disposed within a housing.The housing has an opening that is positioned adjacent to and below thedischarge end of the feeder assembly, so that crop material falls fromthe discharge end into the threshing assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective sectional view of a grain processing assembly;and

FIG. 2 is a side view of a grain processing assembly.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to the Figures, a grain processing assembly 10 for use with acombine include a feeder assembly 12 and a threshing assembly 14. Thefeeder assembly 12 includes a lower first conveyor 16 and an uppersecond conveyor 18. The first conveyor 16 has a continuous belt 20mounted about a plurality of pulleys 22. Preferably, the position of oneor more pulleys 22 are adjustable to change the angles of the conveyor16.

Generally, the first conveyor 16 angles upwardly form an input end 24 toa transition point 26. From the transition point 26 to the discharge end28 the first conveyor 16 changes angle. The discharge end 28 of thefirst conveyor is positioned above or on top of the thresher assembly 14so that grain falls into the thresher assembly 14. The second conveyor18 is positioned above a portion of the first conveyor 16 and includes acontinuous belt 30 mounted about a plurality of pulleys 32. Pulleys 32are also adjustable to change position in order to change the angle ofthe second conveyor 18.

Engaging the second conveyor 18 is an adjustable hood 34. The hood 34extends to and is connected to a first end 36 of the thresher assembly14. The hood 34 has a first plate 38 that is hingedly connected to asecond plate 40.

The thresher assembly 14 includes a rotor 42 that rotates about alongitudinal axis. The rotor 42 is disposed within a housing 44 that hasan opening 46 on a top portion 48 at the first end 36 of the thresherassembly 14 adjacent the discharge end 28 of the feeder assembly 12. Thehousing 44 has a conventional concave and grate configuration. The rotor42 has a front portion 50 and a rear portion 52. The front portion 50tapers outwardly from an end toward the rear portion 52. The frontportion 50 has an impeller blade 54 that spirally wraps around the fronttapered portion 50. The rear portion 52, which is generally uniform indiameter, has a plurality of thresher members 56.

In operation, crop material is transported on the first conveyor 16 fromthe input end 24 to the discharge end 28. The second conveyor 18 assistsin directing the crop material to the discharge end. At the dischargeend 28 the crop material falls through the opening 46 in the housing 44to the front portion 50 of the rotor 42. The hood 34 assists indirecting crop material through the opening 46 and is adjustable tochange the angle of deflection.

The impeller blade 54 sweeps the lower portion of the adjacent feedassembly moving crop material & residual grain toward the rear portion52. The thresher members 56 then engage the crop material to separatethe grain which falls through the housing.

Accordingly, a grain processing assembly for a combine has beendisclosed that at the very least meets all the stated objectives. Inparticular, by feeding crop material to the top of the threshingassembly the likelihood of residual crop material left in the feederassembly is reduced or eliminated. Also, the possibility of crosscontamination of seed is eliminated.

What is claimed:
 1. A grain processing assembly for a combine,comprising: a feeder assembly having a conveyor with an input end and adischarge end; and a threshing assembly having a rotor disposed within ahousing wherein the housing has an opening positioned adjacent to andbelow the discharge end of the feeder assembly.
 2. The grain processingassembly of claim 1 wherein the feeder assembly has a first conveyorwith a continuous belt mounted about a plurality of pulleys.
 3. Thegrain processing assembly of claim 2 wherein the feeder assembly has asecond conveyor positioned above the first conveyor and having acontinuous belt mounted about a plurality of pulleys.
 4. The grainprocessing assembly of claim 1 further comprising a hood that extendsfrom the feeder assembly to the thresher assembly.
 5. The grainprocessing assembly of claim 4 wherein the hood is adjustable.
 6. Thegrain processing assembly of claim 4 where the hood has a first platehingedly connected to a second plate.
 7. The grain processing assemblyof claim 4 wherein the hood is configured to deflect a crop materialthrough the opening.
 8. The grain processing assembly of claim 1 whereinthe hood is configured to adjust an angle of deflection.
 9. The grainprocessing assembly of claim 1 further comprising a rotor configured torotate about a longitudinal axis.
 10. The grain processing assembly ofclaim 1 further comprising a rotor that extends from a front portion toa rear portion, wherein the front portion tapers outwardly towards therear portion.
 11. The grain processing assembly of claim 10 furthercomprising impeller blades spiraling wrapped around the front portion.12. The grain processing assembly of claim 10 wherein the rear portionhas a generally uniform diameter.
 13. The grain processing assembly ofclaim 1 wherein the opening is positioned on a top portion at a firstend of the housing.
 14. A grain processing assembly for a combine,comprising: a feeder assembly having a conveyor with an input end, atransition point, and a discharge end; and a threshing assembly having arotor disposed within a housing wherein the housing has an openingpositioned adjacent to and below the discharge end of the feederassembly.
 15. The grain processing assembly of claim 14 wherein theconveyor angles upwardly from the input end to the transition point. 16.The grain processing assembly of claim 14 wherein the conveyor changesangle from the transition point to the discharge end in relation to theangle of the conveyor between the input end to the transition point.